model releaseOpenAI
OpenAI Releases GPT-5.5 Pro with 1M+ Token Context Window, $30 Per Million Input Tokens
OpenAI has released GPT-5.5 Pro, a high-capability model with a 1,050,000 token context window (922K input, 128K output) priced at $30 per million input tokens and $180 per million output tokens. The model supports text and image inputs and is optimized for deep reasoning, agentic coding, and multi-step workflows.
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